SPECIATION OF TRACE ELEMENTS IN MUNICIPAL SEWAGE SLUDGE

Risto Pöykiö, Olli Dahl, Mikko Mäkelä

    Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

    Abstract

    The sewage sludge investigated in this study originated from the wastewater treatment plant of a municipal wastewater treatment plant located in Finland. Trace element speciation in this context is taken to mean the fractionation of the total element (metal) content into the acid soluble/exchangeable (carbonate bound), reducible (Fe/Mn bound oxides) and oxidizable (bound to organic matter and sulphides) fractions. For this we used the three-step sequential extraction procedure of the BCR (Community Bureau of Reference of the European Commission, now the Standards, Measuring and Testing Programme). The highest extractable concentration in the acid soluble/exchangeable fraction (BCR1 fraction) were observed for Fe (3220 mg kg-1; d.w.), followed by S (908 mg kg-1; d.w.) and Mn (153 mg kg-1; d.w.). The highest extractable concentration in the reducible fraction (Fe/Mn bound oxides; BCR2 fraction) were observed for Fe (37100 mg kg-1; d.w.) followed by Al (657 mg kg-1; d.w.), S (335.0 mg kg-1; d.w.), Ba (218 mg kg-1; d.w.), Cu (164 mg kg-1; d.w.) and Mn (103 mg kg-1; d.w.). The highest extractable concentration in the oxidizable (bound to organic matter and sulphides; BCR 3 fraction) was observed for Fe (17200 mg kg-1; d.w.) followed by S (3220 mg kg-1; d.w.), Al (629 mg kg-1; d.w.) and Cu (138 mg kg-1; d.w.).
    Original languageEnglish
    Title of host publicationProceedings CRETE 2016, Fifth International Conference on Industrial & Hazardous Waste Management
    Subtitle of host publicationChania – Crete – Greece; 27 – 30 September 2016
    Publication statusPublished - 2016
    MoE publication typeD3 Professional conference proceedings
    EventInternational Conference on Industrial and Hazardous Waste Management - Chania, Greece
    Duration: 27 Sep 201630 Sep 2016
    Conference number: 5

    Conference

    ConferenceInternational Conference on Industrial and Hazardous Waste Management
    CountryGreece
    CityChania
    Period27/09/201630/09/2016

    Fingerprint Dive into the research topics of 'SPECIATION OF TRACE ELEMENTS IN MUNICIPAL SEWAGE SLUDGE'. Together they form a unique fingerprint.

  • Cite this

    Pöykiö, R., Dahl, O., & Mäkelä, M. (2016). SPECIATION OF TRACE ELEMENTS IN MUNICIPAL SEWAGE SLUDGE. In Proceedings CRETE 2016, Fifth International Conference on Industrial & Hazardous Waste Management: Chania – Crete – Greece; 27 – 30 September 2016